Glencore International Plc and Rio Tinto Group are among miners buying out companies in which they own stakes during the downturn in equity markets. Katanga Mining Ltd. and Extract Resources Ltd. may be the next targets, said Liberum Capital Ltd. and Ord Minnett Ltd.

Glencore International Plc, the commodities trader acquiring Xstrata Plc, is seeking a credit line of as much as $6 billion before the deal is completed, according to three people with knowledge of the situation.

Glencore International Plc, the commodities trader seeking to acquire Xstrata Plc, set terms for loans to refinance about $12 billion of credit lines, according to two people with knowledge of the matter.

Mick Davis, chief executive officer of Xstrata Plc, will head the company that would be created from the miner’s merger with Glencore International Plc, the Sunday Times reported without citing anyone.

Glencore International Plc, seeking to buy Xstrata Plc for 24 billion pounds ($38.2 billion), is likely to raise its agreed all-share offer in April by as much as 18 percent, according to HSBC Holdings Plc.